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Question
The evolution of a species can be considered as the sum total of its adaptive changes preserved by ______.
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Solution
The evolution of a species can be considered as the sum total of its adaptive changes preserved by natural selection.
Explanation:
Natural selection acts on the heritable variations within a population, preserving those adaptive traits that enhance survival and reproduction. Over long periods, these accumulated adaptive changes lead to the evolution of new species and the refinement of existing ones, as only the fittest organisms survive and pass their advantageous traits to the next generations.
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